linux-kernel - Re: [PATCH 0/4] add minimal bcm2835-sdram driver

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Date:	Thu, 12 May 2016 16:50:54 +0200 (CEST)
From:	Stefan Wahren <stefan.wahren@...e.com>
To:	kernel@...tin.sperl.org
Cc:	Eric Anholt <eric@...olt.net>, Lee Jones <lee@...nel.org>,
	Pawel Moll <pawel.moll@....com>,
	Rob Herring <robh+dt@...nel.org>,
	linux-rpi-kernel@...ts.infradead.org,
	Stephen Warren <swarren@...dotorg.org>,
	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	Russell King <linux@....linux.org.uk>,
	Mark Rutland <mark.rutland@....com>, devicetree@...r.kernel.org
Subject: Re: [PATCH 0/4] add minimal bcm2835-sdram driver

Hi Martin,

> kernel@...tin.sperl.org hat am 12. Mai 2016 um 14:38 geschrieben:
> 
> 
> From: Martin Sperl <kernel@...tin.sperl.org>
> 
> As the sdram clock is a critical clock to the system
> the minimal bcm2835-sdram driver claims (and enables)
> this clock and also exposes the corresponding sdram
> registers via debugfs.

sounds like this driver should fix an clock handling issue. Unfortunately this
isn't a solution in case the driver is disabled.

Does the GPU firmware handle the SDRAM controller or is it initialized by
bootcode?

Stefan